Objects in the image:
category: boat
category: person
category: surfboard
category: person
category: surfboard
category: boat
category: boat
category: person
category: surfboard
category: person
category: person
category: boat

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: it is a boat?
a: No
q: it is someone?
a: Yes
q: on a board?
a: Yes
q: on the red one?
a: No
q: the green one?
a: Yes